Primary provenances can be collected naturally in the field, and eggs, nymphs and adults can all be collected as provenances. Each insect state can be collected from July to September; August to September is the best season to collect nymphs. September is the best time to collect cicada eggs and branches, which can be collected all year round.

There are many cicadas in the tree, which is an ideal place to collect eggs. Thin, dry strips of 1 ~ 2 years old killed by locusts in trees can be easily removed with fruit scissors or long rods with hooks at the top.

All cicada eggs with flat and dry sides and incomplete surfaces and a large number of ivory oval eggs embedded in the subcutaneous xylem are cut off from the upper part of the ovary, leaving 65,438+00 ~ 65,438+05 cm spawning branches at the lower part of the ovary scar, and about 50 of them are bundled into small bundles and put into plastic bags for later use.

Step 2 feed

Feeding objects are newly hatched nymphs and nearly hatched eggs. Branches with eggs collected directly from the wild or in the provenance are concentrated indoors to promote hatching.

3. Harvest and processing

The middle and late June (from summer to around) to early August (around the beginning of autumn) is the best season for field harvest, and the weather is most concentrated in early July or after rain. Nymphs (cicada turtles) dig holes in wet and soft underground with a pair of serrated front feet;

After climbing out of the ground, do short-term exercise on the ground, then climb the trunk or scaffolding to prepare for molting, and feather into an adult cicada at 4 ~ 6 the next morning. You can use a flashlight to illuminate, look for and catch on the ground and trunk under the tree at night, or catch young cicadas with feathers on the tree in the morning.

Living habits:

Cicada is an incomplete metamorphosis insect, and its growth and development go through three stages: egg, nymph and adult. In late July, female adults began to lay eggs after mating, usually on branches with a diameter of about 5 mm. When laying eggs, many oblique egg chambers with a depth of 0.5 ~ 1.0 cm were pricked on the branches, and 6~8 fertilized eggs were laid in one egg chamber, which began to hatch in June after overwintering.

Nymphs fall to the ground, then dive into the soil and get nutrients by sucking the juice from the roots of plants. Nymphs usually live in the soil for 3~5 years, or even longer, until the last larva drills out of the ground and climbs up nearby weeds, trees, etc. Finally, stay on the branches and leaves, bark, molt and feather into adults. Mating and spawning began 20 days after emergence, and the peak of spawning appeared from the end of June to the end of August, and gradually entered the end of spawning.